[dm-devel] [PATCH v5 4/6] dm: new ioctl DM_DEV_REMAP_CMD

[Mike Snitzer]

On Tue, Feb 09 2021 at  9:30am -0500,
Sergei Shtepa <sergei.shtepa at veeam.com> wrote:

> New ioctl DM_DEV_REMAP_CMD allow to remap bio requests
> from regular block device to dm device.

I really dislike the (ab)use of "REMAP" for this. DM is and always has
been about remapping IO.  Would prefer DM_DEV_INTERPOSE_CMD

Similarly, all places documenting "remap" or variables with "remap"
changed to "interpose".

Also, any chance you'd be open to putting all these interposer specific
changes in dm-interposer.[ch] ?
(the various internal structs for DM core _should_ be available via dm-core.h)

Mike